Server device in contents transmitting system and contents transmitting method
View Patent ↗When the content data recorded in the server device 100 is reproduced in the client device 200 through communication, the contents transmitting system shorten the time to reproduction of content data in reply to a reproduction request from the client device 200 . In order to shorten the time up to the reproduction, in the server device 100 , a start portion of the content data for an arbitrary time is prepared, which is encoded at a different rate from the encode rate of the content data as for the transmission bandwidth at the previous reproduction of the content data, and it is transmitted to the client device 200 and reproduced at the reproduction starting time. At the time of transmitting the content data, the server device 100 transmits the initial portion of the content data while encoding it for an arbitrary time at real time at a different encode rate as mentioned above, and client device 200 reproduces it.
1. A server device in a contents transmitting system including the server device and a client device connected to each other through a network in a communicable way, for transmitting content data recorded in the server device to the client device, the server device comprising:
an encode parameter deciding unit that decides encode parameters of a reproduction start portion of the content data so as to be a different encode rate from an encode rate for a transmission bandwidth in the network, wherein the encode parameters are decided by the encode parameter deciding unit such that an average encode rate in a reproduction time of the reproduction start portion becomes lower than the encode rate for the transmission bandwidth in the network;
an encoder that encodes the reproduction start portion with the encode parameters; and
a recording unit that stores the reproduction start portion encoded in the encoder;
wherein the server device transmits the reproduction start portion stored in the recording unit to the client device, when the server device receives a reproduction request of the content data from the client device, encodes the portion other than the reproduction start portion of the content data at the encode rate for the transmission bandwidth in the network, and transmits the encoded portion to the client device.
2. The server device according to claim 1 , wherein
the encode parameter deciding unit decides the encode parameters so as to increase the encode rate according to elapse of the reproduction time of the reproduction start portion.
3. The server device according to claim 1 , wherein
the encode parameter deciding unit decides the encode parameters previously set as the encode parameters of the reproduction start portion.
4. The server device according to claim 1 , further comprising:
a history recording unit that stores the encode rate in the past transmission of the other content data other than the above content data as encode rate information, wherein
the encode parameter deciding unit decides the encode parameters in the reproduction start portion based on the encode rate information stored in the history recording unit.
5. The server device according to claim 4 , wherein
the encode parameter deciding unit decides the encode parameters in the reproduction start portion based on the content data information obtained by analysis of the content data and the encode rate information stored in the history recording unit.
6. The server device according to claim 1 , further comprising:
a history recording unit that stores encode rate information of the content data when end, suspension, or interruption of the content data occurs, wherein
the encode parameter deciding unit decides the encode parameters in the reproduction start portion based on the encode rate information stored in the history recording unit.
7. The server device according to claim 6 , wherein
the encode parameter deciding unit decides the encode parameters in the reproduction start portion based on the content data information obtained by analysis of the content data and the encode rate information stored in the history recording unit.
8. A contents transmitting method using a contents transmitting system including a server device and a client device connected to each other through a network in a communicable way, for transmitting content data recorded in the server device to the client device, the method comprising:
an encode parameter deciding step of deciding encode parameters of a reproduction start portion of the content data so as to be a different encode rate from an encode rate for a transmission bandwidth in the network, wherein the encode parameters are decided by the encode parameter deciding step such that an average encode rate in a reproduction time of the reproduction start portion becomes lower than the encode rate for the transmission bandwidth in the network;
an encode step of encoding the reproduction start portion with the encode parameters; and
a recording step of storing the reproduction start portion encoded in the encode step;
wherein the server device transmits the reproduction start portion stored in the recording step to the client device, when the server device receives a reproduction request of the content data from the client device, encodes the portion other than the reproduction start portion of the content data at the encode rate for the transmission bandwidth in the network, and transmits the encoded portion to the client device.